According to
Auto Motor und Sport Formula One might introduce entirely new engine regulations in 2016. Because of the engine freeze, it has become pratically impossible for new engine manufacturers to enter Formula One and the new engines are considered to be not only expensive but also too complex. However, Mercedes-Benz, Honda and Renault do not want to give up on the hybrid engines, which are very relevant to them.
Interestingly, Mercedes-Benz denies the current engine regulations are too expensive. The German manufacturers states the current engines are merely three to four millions dollars more expensive than the 2,400 cc V8-engines.
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